What would happen if you came to work and the doors were locked? How could you carry on if you could not get to your desk. With the right tools and culture in place you could create an office-less office.
You would need to plan and test the office-less office before an unforeseen event or circumstance takes place. Do you have the correct tools to collaborate over the internet with your colleagues and customers? Create a plan, test it and review it at least every six months. Each employee should know their role. It’s not easy and it’s not cheap to create a plan and teat it, but it is worth the effort and time.